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Ohh. Let's look into this. To drill out the existing threads just use a drill bit slightly bigger than the hole?
Yusuf987-
https://youtu.be/WKkou_WTkZg
Maybe of help
littleK
You’d need to drill out the existing threads, re-tap for a size up, then install the helicoil.
Bit of a pita, only really worth doing for exceptional cranks.